I found video of spoil board with pieces of pvc pipe placed in holes to hold projects.
The pvc has a nominal dimension of 21.43mm
When I created my test hole in Create, I entered the Radius 10.715mm
My bit is Ruhi 1/4 end mill, stepover 0.5 depth 1.00 mm
This created a circle to large.
Ive played with this circle, and ended up with following:
Radius: 6.970mm
This gave me a nice tight fit of the pvc in the holes.
My question is i thought the radius you were supposed to enter was 1/2 of the diameter, am I missing something?
That’s really odd. I can’t see any reason why your holes would be anything other than 14mm across.
Looking at the toolpaths, the tool is definitely defined as 1/4". This is on a 1/8" grid, you can see that the tool centerline is 1/8" away from the boundary.
Is there any possibility that the tool itself is larger than 1/4"? But with that, the tool would have to be way larger to get a 21mm hole out of it, not something that would be easy to overlook.
A friend bought this machine and I’m attempting to get it working.
It’s a Shapeoko 3 standard, Z-Belt, Dewalt DEP611 router.
Controller v2.1 with Grbl .9. Found program to update Grbl to 1.1f and installed it. Came with manual homing switches still in plastic bag, installed them.
The bit I’m using is Whiteside RD2075.
Worked with Carbide support because I had loaded CM bld 640 and was having issue clicking on Initialize Button. They informed me that I needed to go to bld 622 or older which I did.
Also, also I’m unable to identify any of the bits my friend got with the machine are Carbide 3d. So I didn’t feel safe using the built in tool database. I attempted to create a new CVS file in CC and add some of the bits he did receive, couple of Whiteside and some RUHI.
The parameters that CC uses for their bits are pretty conservative. If your bits are the same diameter and # of flutes, you could just use the equivalent C3D bit. So, for the RD2075, I would just pretend it’s a C3D #251 to get started.
As you get more familiar with the machine, then it will make sense to create an entry for the bit as you experiment with feeds and speeds.
The previous owner had placed a 1/4 Mdf waste board d on the machine. Since this is basically my first attempt at using the cnc, I attached a 1/2 in piece of plywood to the machine to try and learn pocketing. My friend is going to provide me a 3/4 in piece of Mdf for new waste board, I didn’t want to destroy it.
Controller board has 8 slide switches, see photo.
Also photo of current measuring tools, test bed so far, and the bit I’ve been using, I realize it needs more work.
Appreciate all your help, thought I was not understanding the principle of the software/machine.
Eureka William, powered down, toggled all the switches to 1/8, then powered back up. Created new CC file for one hole with radius of 10.715 and executed program.
Was able to force pvc pipe into hole, just need to modify radius a little to make it go in a little easier.
